I've just refraised the post and took the mentioning of BBC out, thought that might have been the cause, but still the same, perhaps you're right Moth and it's the added URL's.
I don't dare to have another go till tomorrow :-) but perhaps if not putting the URL's between the URL's brackets might be an option as I think there was a thing on that issue some time ago on TTF?

George could you help out here?
Question.
If we or others want to refere to TW or the petition, HA or another relevent site of the moment in a closing line,
What would be a good sentence?

Hi Moth,

Posting on TT.
The press release worked ok without html url's.
Sorry if our earlier posts crossed, perhaps you would like to give the Guardian article another try, if it doesn't appear?